Ecumenical Patriarch Bartholomew I delivers a speech as Greece's Prime Minister Alexis Tsipras attends the ceremony at the Theological School of Halki, in Heybeli Island, near Istanbul, Wednesday, Feb. 6, 2019. The president of Turkey and the prime minister of Greece agreed Tuesday on the need to keep "channels of dialogue" open between their countries, which have come to the brink of war three times since the early 1970s and remain divided over an array of issues. (AP Photo/Emrah Gurel)

Ecumenical Patriarch Bartholomew I delivers a speech as Greece's Prime Minister Alexis Tsipras attends the ceremony at the Theological School of Halki, in Heybeli Island, near Istanbul, Wednesday, Feb. 6, 2019. The president of Turkey and the prime minister of Greece agreed Tuesday on the need to keep "channels of dialogue" open between their countries, which have come to the brink of war three times since the early 1970s and remain divided over an array of issues. (AP Photo/Emrah Gurel)